Following an inline link on Wikipedia I know what to expect, basically a definition of the linked concept. External links on the other hand I consider more like footnotes at the end of a book chapter or an article. Regarding inline links all over have a look at the 1999 website a-blast.org / assoziations-blaster.de
On GNU/Linux Thunderbird ist my favourite GUI mail client, offering support for a variety of standards, including e.g. CalDAV (CardDAV in Beta), OpenPGP and S/MIME.
Not sure whether Chat should be part of it, currently offering Google Talk, IRC, Odnoklassniki, and XMPP (Twitter finally gone). Support for Usenet News is appreciated, though I enjoy Pan.
On GNU/Linux I thus consider GNOME Evolution as best alternative. (Haven't looked at the KDE suite for some time with Akonadi being too heavy last time I tried it on my simple machine.) Neither Claws, Geary, Sylpheed, or others offer such broad support, although those are very nice GUI clients.
Feed reader support for JSONFeed (Brent Simmons and Manton Reece, jsonfeed.org) is quite unclear at the moment; maybe only iOS Reeder apart from NetNewsWire?
It's a pity, as Web feeds in JSON can be produced in a more ad-hoc fashion – an even more simple format with one entry per JSON feed line (admittedly with redundancy across lines) would have been great, too.
https://quicksy.im/ – a spin-off of the popular Jabber/XMPP client Conversations with automatic contact discovery.
> Even if you are not a Quicksy user you can enter your Jabber ID into the Quicksy Directory and give Quicksy users the ability to automatically discover you based on your phone number. This lets you enjoy the privacy-friendly, federated nature of Jabber/XMPP while giving your less tech-savvy friends a low barrier entry into that world
// not affiliated; saw this recently, like the idea.
Kindle Oasis 6" is still the lightest (without case, that is). The now available firmware 5.8.11 offers more font weights. Supposedly, also audio via bluetooth will be available. [fixed typo]